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What is the difference between a Model 5 and a Model 7?
Posted: Thu Feb 13, 2014 5:03 pm
by Allenorgan42099
Is there any difference? Is one an earlier version? Which one is a better siren?
Re: What is the difference between a Model 5 and a Model 7?
Posted: Thu Feb 13, 2014 5:14 pm
by Batman
There actually is no difference. Supposedly the Model 5 had 5 horsepower and the Model 7 had 7HP, but in reality they were both the same siren and actually had about 10HP. The siren should have been named the Model 10, but I believe there were some regulations that restricted motor horsepower, so Federal Signal lied about the rating so they could get past them.
The Model 7 name was discontinued long before the Model 5 name I believe. If any of that is wrong, someone who knows more can correct me.
Re: What is the difference between a Model 5 and a Model 7?
Posted: Thu Feb 13, 2014 5:55 pm
by freebrickproductions
I think the housings were slightly different. I'm not 100% sure on that though.
Re: What is the difference between a Model 5 and a Model 7?
Posted: Thu Feb 13, 2014 6:02 pm
by Mark N
Batman hit the nail right on the head. The Model 7 is an older Model 5.
Re: What is the difference between a Model 5 and a Model 7?
Posted: Thu Feb 13, 2014 6:33 pm
by Tyler
Mark N wrote:Batman hit the nail right on the head. The Model 7 is an older Model 5.
I don't think so because the Model 5 came before the Model 7 from what I've seen.
Re: What is the difference between a Model 5 and a Model 7?
Posted: Thu Feb 13, 2014 8:34 pm
by justie1220
Batman wrote:There actually is no difference. Supposedly the Model 5 had 5 horsepower and the Model 7 had 7HP, but in reality they were both the same siren and actually had about 10HP. The siren should have been named the Model 10, but I believe there were some regulations that restricted motor horsepower, so Federal Signal lied about the rating so they could get past them.
The Model 7 name was discontinued long before the Model 5 name I believe. If any of that is wrong, someone who knows more can correct me.
Pardon me if this is a dumb question but why was there a horse power limit on motors of 10HP was it a Civil Defense requirement?
Re: What is the difference between a Model 5 and a Model 7?
Posted: Thu Feb 13, 2014 8:59 pm
by holler
The early restrictions were in place for fire sirens because of the electrical grid. REA frowned upon any motor bigger than 5 horsepower.
There was no such thing as a 10 horsepower limit. The P-50 and the Super Sirexes are proof of that.
Re: What is the difference between a Model 5 and a Model 7?
Posted: Thu Feb 13, 2014 10:03 pm
by justie1220
holler wrote:The early restrictions were in place for fire sirens because of the electrical grid. REA frowned upon any motor bigger than 5 horsepower.
There was no such thing as a 10 horsepower limit. The P-50 and the Super Sirexes are proof of that.
ahh that makes sense proves i have a lot more to learn about motors
Re: What is the difference between a Model 5 and a Model 7?
Posted: Sun Feb 16, 2014 10:48 pm
by floor-a-matic
Model 5 is high-tone; & model 7 is low-tone. However, Models 5T & 7T are dual-tone like the SD-10
Re: What is the difference between a Model 5 and a Model 7?
Posted: Sun Feb 16, 2014 11:20 pm
by holler
floor-a-matic wrote:Model 5 is high-tone; & model 7 is low-tone.
Wrong.